1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b10a3a31e087851e130992f4feb4e260e3ed19723707e7d73ad4d8d1141281d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9dfb38b-886b-4229-aea0-997f84e55e1f.json and https://artists.proofprofile.net/proofs/artist/a9dfb38b-886b-4229-aea0-997f84e55e1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rumore bianco per bambini: suoni calmi della cameretta per un sonno migliore
Rumore bianco per il sonno del bambino – Dolce sonno del bambino
Suono dell'utero con ritmo di sonno lento
Suono del grembo con il battito cardiaco della madre
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb63aa1882c252e454ed3b74377eaca741196094427878b284a1c80391e16099. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f5c55789c2cbfdb41f4805c7d2bd8298f4706cd9b0e311ed7d04ecd20a3c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187941.
Calmare il rumore del sonno per il bambino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f632ce01429e30a884a9acd96baa539b95abcc900304011ea3ac0d1d1fccb22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e062fff0f9c24a59659869b0e4d6d68876a3be51b99c4bd6557c206e2ca9de2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290278866c7d659405ef5e4127dc777c98456025c14aaa3a07e86f9110acb9ff. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187936.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fdd071c41e0f333d4ac3c69155683e9a37d2d09f91b4c26f780e34e2efb59. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187937.
Suono dell'utero con impulso di sonno calmo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a50bd3167c6a5917bd136ac2e5eb0d8ab734e7d132f563919a8ff8b3401c45. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187938.
Suono dell'utero per un sonno profondo del bambino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443775d4736914e8a282736578eb513f51f26aa48580f6f565f5d64a8213ecab. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187939.
Suono dell'utero con rumore bianco in movimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceba4b850fb509c2794b900db32b08955ad48251057b741ab99b37708a3f47fc. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187940.
Miglior ciclo del sonno del bambino con i suoni dell'utero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b312f9956a26f043933ba9d83db445d2a9ba4ea30ffdcb910c53290131b8ff1. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d07b615fa35c172a84c10b97b7211ade9cc0dce555afd006cc143479876b574. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187944.
Suoni sonnolenti dell'utero per il sonno del bambino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ebca430a14bc003e28f986a65df9f5641e9443e29fe703c5e6dcbe85b83c59. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d25f16b341f029b6f2ca2b1e3517a8cb141262e0c2fd07ddd188d76e170ff. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d30e3cdf5ee6f9af92b4ab18090ce60285d23adba6c346a3840f212bc9a5cd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9187949.